diff --git a/apps/mtm/views.py b/apps/mtm/views.py
index c9f660e2..30810262 100644
--- a/apps/mtm/views.py
+++ b/apps/mtm/views.py
@@ -333,6 +333,7 @@ class RouteViewSet(CustomModelViewSet):
     serializer_class = RouteSerializer
     filterset_class = RouteFilter
     ordering = ['sort', 'process__sort', 'create_time']
+    ordering_fields = ['sort', 'process__sort', 'create_time', 'update_time']
     select_related_fields = ['material',
                              'process', 'material_in', 'material_out', 'mgroup', 'routepack']